I am trying to join 2 mpeg files. One is an intro i made and the other is a movie that was ripped. The intro has the same bitrates and fps but when i try to use tmpgenc or ifilmedit i get errors when joining the 2 files. Ifilmedit says "invalid source (player) file" and tmpgenc tells me that the 2 files are not compatible. The only thing i see different between the 2 clips is that the mux rate on 1 is 176400 and the other is 172450. I am not sure if that is the problem. Any help is appreciated...thanks to any who reply.